\documentclass[12pt]{article}
\usepackage{amsmath,amssymb,amsfonts}
\begin{document}
In this paper the analysis of certain logarithmic expansions, which developed for precision studies of the
evolution of the QCD parton distributions (pdf) at the Large Hadron Collider, is used. The xF3 data of the
CCFR collaboration is used to parameterize the non-singlet parton distributions in this order. In the �tting
procedure, Bernstein polynomial method is employed. The results of valence quark distributions in the NLO are
compered with exact and truncated solutions for non-singlet case.
\end{document}